PROJECT INFO
- Category: XProject
- Date: Spring 2021
- Skills: 3D modeling, soldering, teamwork, project management, client interaction, user/customer research, video editing in Adobe Premiere Pro
a better way to bike
For this XProject, our client Stephen Spencer wanted us to realize his idea of a system to power an EBike using off the shelf power tool batteries. We modified a pre-existing design to interface with the RYOBI batteries, and designed two kinds of wire harnesses to complete the system. One harness uses power timer contacts to connect to the battery terminals, and connects to the Y-harness. The Y harness connects the two batteries in parallel to the motor, increasing the current through the system. Our project documentation, including part files, can be found on GitHub. We also made a how-to video to guide potential users through the process of converting a regular bike to an ebike with our battery system.
This project got featured on Hackaday.com, a popular DIY blog, and in the Pitt Engineering News.
how-to video:
written documentation:
One of the project's goals was to thoroughly document our design process and give recommendations for battery system configurations. Our written documentation can be found here:
more photos:
The battery easily slides into the mount. |
Biking up cardiac hill with full motor power. |
Many iterations of the mount design.. |
The small wire harness with the power timer contacts that mate with the battery terminals. |
The fully assembled mount. |
The ebike with two batteries mounted. |
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